Front bumper



FIG. 1 is a front perspective view of a front bumper showing our new design;

FIG. 2 is a from view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

It will be understood that the broken lines shown in the drawings illustrate portions of the front bumper that form no part of claimed design. 

CLAIM The ornamental design for a front bumper, as shown and described. 